Golf-ball.



P. A. MARTIN & J. STAN GOLF BALL.

APPLIOATION FILED AUG. 20, 1910.

Patented Apr. 2, 1912.

WITNESSES- pinup s'ra rus PATENT OFFICE.

PATRICK ALPHONSUS MARTIN, OF BIRMINGHAM, AND JCiI-IN STANLEY, 0F SPARKHILL, NEAR BIRMINGHAM, ENGLAND.

GOLF-BALL.

1,02%,24tti.

Specification of Letters Patent.

Patented Apr. 2, 1912.

.Zb all whom it may concern:

Be it known that we, PATRICK,ALrHoNsus Marian, governing director of Martinsl iirmingham, Limited, of Granville street, Birmingham, -England, and J OHN STANLEY, of 137 Ivor road, Sparkhill, near Birmingham, England, engineer, subjects of the King of Great Britain, have invented certain new and useful Improvements in Golf- :lialis, of which the following is a speciticw tion.

This invention has relation to golf balls of the kind in wl'iich soitt soap or other colloid or gelatinous substance used to form the wire or center of the ball and is coml and made highly resilient by the apni o'ticnse-w'olunl wrappinus or to, the said core, and has for its to produce a core which suitz-ible in that ciass oi. balls which are Ky smaller in size ill: but are oi the 2; weight as. the ordinary all. 7H soap, {or like material} has the :ulvan. o of being ap, od lubricui'it 'f r the tensioncd rubber windi or counnre on 'v-."rgnnp2js of the core. and further-mo hen so soap isfiused, is core cannot l: rd u or set so that a. l so made does in criomle in keeping; but always a. v2. or in a condition for developingresilient act when played.

iliccording to the present invention, we still refer to use soft soap or similar compressible material as the basis of the core and so obtain the lubricating and non-setting advantages attendant upon such use, while in order to admit of a smaller core of higher specific gravity or relatively greater Weight being produced, we propose to add 'to or intermix. With the soap or like basis or assist the said core-basis in lubricating the tensioned rubber wrappings of the core and in providing for the production of a ball having a core-filling of relatively higher specific gravity than is usual in core of the ordinary size. Such weighting materials of an absolutely impalpable or lubricating character may also be added to or embodied in ball-cores or fillings such as size, isinglass, gelatin, starch paste, or similar compressible jelly-like substances.

In making up a ball having a core-filling of the compositematerial formed by the incorporation of a weighting powder with the basis material, a su'llicient quantity of the compressible composition is used to insure that when compressed by the tension \\'ind inc-s, it will produce a ball of high elasticity and resilicncd 'lhis; appropriate quantity of raiimposilion is preferably Forced into a small rubber ban or elastic rece ')lacle a, shown in Fin-in l to l 0'? the accompanying); drawing, hating: an '.=enin at u to provide i Olr-llle introductimi oi filling mal'( all. Om lll'tiiltfl'l'fljl and practical proportion of materials tor the core consists oi one piulnd of ramp to one to three pounds of hrn-ytes, aceorijling to the required weight.

(When the whole of the said material has lueen ftOl'C itl in, tho rerr-ptaclo is tied up and the ball center (Fig. 4) thus produced is much larger than required in the finished ball. The said center is then wound down and compressed into a hard and resilient body by the application of tense-wound rubber thread I), to a suitable thickness, thereby producing the complete core which, though smaller in size. is of the correct weight by reason of the added proportion of weighting substance in the filling conniiosition, while its density and hardness and consequently its resilience, is dependent upon the degree of contipression applied by the'tensioncd wrappings. The completed core is inclosed, as usual, in a gutta covering c, as represented in Figs. 1 and 2 which show sections of the complete ball.

Having fully described our invention, what we desire to claim and secure by Letters Patent is l. A golf ball having a core composed of a compressible colloid substance incorporated with a weighting material which will not interfere with the lubricating properties thereof, and 'an elastio-tensioned winding enveloping such core and maintaining the same under compression to reduce its size and increase its density.

2. A golf ball having a core composed of a compressible colloid substance ineowporated with a Weighting material in the form. of an inipalpable nonabsorbent powder, and an elastic-tensioned. Winding enveloping such core and maintaining the same under compression to reduce its size and increase its density.

In testimony whereof We have hereunto set our hands in witnesses.

PATRICK ALPH-ILNSUS MARTIN JOHN STANLEY.

Vfitnesses gKERRETT, HENRY NoRToN SKERRETT.

presence of two subscribing 15 

